I'd go with, and used to feed
Roxy Eukanuba.
The one commercial with the Search and Rescue dog is why! LOL, They said it's what they feed police dogs, search and rescue dogs etc, and it had a horomone/chemical called DHB that made them smarter
Needless to say I got it because of the supposed chemical that made your dog's brain develop bigger/faster. ROFL
I then switched to Nutro Large Puppy Forumla (had a rottie puppy on the bag, the people at the store said it was perfect for her!), than Wellness, and now Eagle Pack.